Mozart gave the tenor three arias, of which the second is hair-raisingly difficult (as noted above) and the third quite challenging too. Student performances -- even professional ones, a few decades back -- generally omit the latter two, leaving the tenor with only his Act I aria. (Other numbers were sometimes cut or abbreviated as well; the "standard German performing edition" up through the 1970s was brutally abridged. This is close to what student performances are likely to do now, to ease the strain on their inexperienced performers.)
The bass aria (for the character Guilelmo) about women is "Donne mie, le fate a tanti."